[ Four Adjustable Weights ] This dumbbell set allows quick switching between four weight options per dumbbell: 2.2lbs (1kg), 4.4lbs (2kg), 6.6lbs (3kg), and 8.8lbs (4kg). As a pair, they provide total weights ranging from 4.4lbs to 17.6lbs (2kg to 8kg). Perfect for beginners starting their fitness journey or experienced users engaging in high-intensity strength training, these adjustable weights adapt seamlessly to your workout intensity and progression. [ Enhanced Safety and Stability ] Featuring an upgraded V-shaped dovetail groove structure, these hand weights enable easy removal and adjustment without snagging. Simply hold and press the second weight to move the outermost ones smoothly. Equipped with a reliable safety locking mechanism, the weights remain securely in place during use, preventing accidental falls and ensuring your safety throughout every exercise session. [ Convenient Storage and Grip ] Designed with flat sides, these dumbbells stay stable on surfaces, preventing rolling during workouts and making storage effortless in compact spaces like under beds or in closets. The handles are textured with non-slip vertical stripes for a firm, comfortable grip that enhances control and reduces hand fatigue, improving your overall exercise experience. [ Versatile for Multiple Scenarios ] Compact and portable, this set of two dumbbells is ideal for various settings including home gyms, offices, or small apartments. By combining different numbers of weights with diverse training movements such as curls, presses, or squats you can achieve a comprehensive full-body workout targeting arms legs chest back and core muscles effectively. [ Durable and Odor-Free Construction ] Made from high-quality anti-wear materials these hand weights are built to last through regular use without developing unpleasant odors They maintain their appearance over time making them a practical gift choice for fitness enthusiasts friends or family members looking to enhance their health routines [ Important Assembly Instructions ] For optimal performance always insert the weights narrow-edge-first during setup to avoid jams Incorrect orientation may cause permanent trapping so we recommend watching our video guide before assembly or disassembly This ensures smooth operation and extends the product's lifespan keeping your workouts safe and efficient